@wnrax - Interesting. The first time I did the clean install, forgot the exact date but it was the last 2 weeks as it's in the other thread was that on my system when I do steps #1 to 2, the adapter completely disappears in Device Manager as the only thing listed under Display Adapters is nVidia. then I reboot and Device Manager will still show Intel UHD so I do steps #1 to 2 and reboot and then I think I had to do it two more times before the reboot would show "Microsoft Basic Display".
Yesterday, I only had to do Steps #1 to 2 once which also resulted in the Intel UHD disappearing and rebooting showed Microsoft Basic Display. The only difference between what I did and what you did was you probably were still connected to the internet while I stayed offline before I did the uninstall and then did the installation after waiting 10 minutes, what happened was as soon as I connect the internet even before rebooting, and just going into settings and windows update without even clicking on updates, it will already show 30.0.100.9976 as pending and then it does the installing on it's own a few minutes later.
What I noticed that before I did the first clean install a week or so ago was that beginning with 9922, at the end of the install, the display would go black and never recover so I never know if it ever finished installing or not but with the clean install, the install always restores the video and the screen never goes black at the end of the install process so probably 9922 added something to the system that the installations over it kept.
As for how you got the 27.20.100.9664, were you still connected to the internet because it seems that Windows appears to also query and installs things.
Back in July, there was a time when all of a sudden, Windows Explorer would not load so there was no start menu and the start up programs never loaded. It turned out that Microsoft sent some kind of fix to everyone and one way to fix it was to change the clock to one day later and everything worked again. Other people had the issue with the new build version of Windows 11 but I never updated and still had the problem. So until that workaround was done, the computer was not usable at all.
27.20.100.9664 was actually released on September 17, 2021 which was only released for one reason:
Speaking about the Dell driver, the whole reason for that release is not because of Windows 11 but rather:
"This package contains the Intel Security Advisories INTEL-SA-00508 and INTEL-SA-00566-1. A security advisory is a statement when a security vulnerability impacts a product, and a remedy is available for the vulnerability.
Fixes & Enhancements
- Driver updates to address the Intel Security Advisories INTEL-SA-00508 and INTEL-SA-00566-1.
"
which came from here:
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00508.html
This is from the other thread which I posted in as Intel kept saying that the 27.x.x.x driver from Dell was Windows 11 compatible but as we all know, Intel officially supported Windows 11 in 30.0.100.9664 back in July. And ofcourse in the other thread, they would not even look at troubleshooting what's wrong with the 30.x.x.x driver when it says to contact intel if any problems are found in the release notes but instead, they point people to a band-aid solution. I am sure 27.x.x.x will work but Dell also never thoroughly tests things or else the Killer Networks 1535 would not suffer from sync but no surf issues multiple times daily and the only choice was to replace the card with a Intel card even though Killer Networks is part of Intel now.
But anyways, as you mentioned the guide at https://www.intel.com/content/www/us/en/support/articles/000057389/graphics.html earlier, that guide also said you were supposed to install the drivers when it says "Microsoft Basic Adapter" after rebooting so it should not even have installed another driver on it's own, otherwise if you ran the manual installer, it would no longer be a clean install because there would be an existing Intel driver on the system. Just curious, but what does it say for the driver provider? Does it say Intel or does it say Microsoft because it would be interesting to know where the install for that came from as the whole point of doing a clean install is so you can install without something already existing there, not to let it keep installing something on it's own. I also do a clean install on the Intel Audio driver as well because that will get reinstalled when the video part gets installed.
